A Comparison of Seismic Array Processing Methods
A Comparison of Seismic Array Processing Methods
复制标题
地震台阵处理方法比较
DOI：
--
复制
发表时间：
1966
期刊：
影响因子：
--
通讯作者：
M. Levin
中科院分区：
文献类型：
--
作者：
Jr P. E. Green;Jr E. J. Kelly;M. Levin
总结
本文讨论了一些替代方案组合的输出地震检波器在一个阵列，以最大限度地提高信噪比，同时施加最小的失真的信号到达的波形。对于高斯噪声，这些要求导致线性处理器。一个简短的回顾是这样的处理器，涉及一个单一的延迟或一个单一的延迟和幅度的重量在每个传感器输出之前求和的类。然后描述更一般的线性处理类，其涉及在求和之前对每个输出进行线性滤波操作。这类的两个主要程序是最大似然和维纳处理。其中第一个结果从强加的信号的零频率失真的条件，后者的结果在噪声和输出中的信号失真之间的最佳折衷。实验结果表明，使用这些不同的计划在亚利桑那州（TFO）和蒙大拿州（LASA）的安装在少量的地震计的结果。
Summary
This paper discusses a number of alternative schemes for combining the outputs of the seismometers in an array so as to maximize the improvement in signal-to-noise ratio while imposing a minimal distortion on the waveform of the signal arrival. For gaussian noise, these requirements lead to linear processors. A brief review is given of the class of such processors that involves a single delay or a single delay and amplitude weight in each sensor output before summation. The more general class of linear processing involving a linear filtering operation on each output before summation is then described. The two principal procedures of this kind are maximum-likelihood and Wiener processing. The first of these results from imposing the condition of zero frequency distortion of the signal; the latter results in an optimum tradeoff between noise and signal distortion in the output. Experimental results are presented showing the result of using these various schemes on small numbers of seismometers at installations in Arizona (TFO) and Montana (LASA).